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  • 1
    Electronic Resource
    Electronic Resource
    Anthocyanins of Crowberry, Empetrum nigrum coll. (1984)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 49 (1984), S. 0 
    Details
    ISSN: 1750-3841
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Anthocyanins of northern crowberry (Empetrum nigrum ssp. hermaphroditum (Hagerup) Böcker) were extracted from the berry with acidified ethanol and purified with solvent extractions and ion exchange chromatography. Separation of anthocyanins and analysis of aglycones were carried out with HPLC. Glycosidic units were analyzed with GLC-MS. Twelve nonacylated monosides were found: glucoside, galactoside and arabinoside of delphinidin and petunidin, and galactoside and arabinoside of cyanidin, peonidin and malvidin. Three main anthocyanins were galactosides of cyanidin, dolphinidin and malvidin which formed about 60% of total anthocyanins.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2621.1984.tb12486.x
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  • 2
    Electronic Resource
    Electronic Resource
    Lorentz invariant exact solution of the anomalous chiral Schwinger model (1988)
    Springer
    The European physical journal 39 (1988), S. 269-273 
    Details
    ISSN: 1434-6052
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract We present an exact solution of the anomalous chiral Schwinger model using Fermionic variables. We implement infrared regularization by considering the model on a spatial circleS 1. Quantum effects modify the gauge constraints through the appearance of Schwinger terms in the gauge algebra. We perform a careful analysis of the resulting second class gauge constraints by implementing Dirac's method at the quantum level and obtain the spectrum of the theory. We get a consistent unitary Lorentz invariant theory for particular values of the counterterms. We find that when we regulate the fermionic sector of the model without reference to the gauge fields Lorentz invariance requires that we add both Lorentz variant and gauge variant counterterms.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01551003
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  • 3
    Electronic Resource
    Electronic Resource
    Enantiomer separation of 2-halocarboxylic acid esters by chiral complexation gas chromatographyDedicated to Professor Ernst Bayer on the occasion of his 60th birthday (1988)
    Weinheim : Wiley-Blackwell
    Journal of High Resolution Chromatography 11 (1988), S. 89-93 
    Details
    ISSN: 0935-6304
    Keywords: Gas chromatography, GC ; Capillary columns ; glass ; Complexation GC ; Chiral complexation GC ; Enantiomer separation ; Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The enantiomer separation of 2-halocarboxylic acid esters on two chiral nickel(II) bis-((perfluoroacyl)terpeneketonates) by complexation gas chromatography is described. The quantitative entiomer separation of branched 2-halocarboxylic acid esters is achieved with nickel (II) bis (3-(heptafluorobutanoyl)(1R, 2S)-pinan-4-onate) 1 while unbranched 2-halocarboxylic acid esters are preferably separated on nickel(II) bis(3-(heptafluorobutanoyl)-(1S)-10-methylenecamphorate) 2. The metal chelates 1 and 2 are accessible in both enantiomeric forms allowing the determination of the enantiomeric excess (ee) effective and reliable.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jhrc.1240110123
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    Paper (German National Licenses)
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